File input for multiple formats
Processes Japanese PDF, image, EPUB, and text files, then converts the contents into a more readable layout instead of leaving the original page structure untouched.
Mooon
Mooon is a Japanese document processing tool for PDFs, images, EPUBs, and text files. It helps readers convert layouts, add furigana, translate content, and read files or manga aloud, with a browser extension for webpage reading as well.
Overview
Mooon is a Japanese document reading and processing tool built around PDF workflows, with support for images, EPUB, TXT, and common image formats as well. It is designed to make Japanese files readable by extracting text, reformatting layouts, adding furigana, translating explanations, and reading content aloud.
The site positions the product around two main modes: a file-processing flow for documents such as novels, papers, and manga, and a browser extension for reading web pages. The file workflow can handle vertical text, columns, and mixed layouts, while the extension adds page furigana, translation and explanation, selection-based reading, and study-oriented export features.
Core capabilities
Layout conversion
Converts vertical, two-column, and mixed layouts into cleaner horizontal text, which is useful for documents that are hard to read directly in their original format.
Reading support with furigana
Adds furigana for kanji and katakana/loanword readings, helping readers pronounce words while reading original Japanese text.
Document translation
Translates the full document and supports side-by-side or replacement-style translated output, which is useful for reading with translation context.
Text-to-speech reading
Turns file content or manga dialogue into audio with natural Japanese voices, including bubble reading for comics.
Manga-specific processing
For manga, extracts dialogue, supports copy/edit workflows, adds furigana, translates pages, and reads speech bubbles aloud.
Common use cases
Reading Japanese papers and documents
Useful for readers who want to turn vertical or mixed-layout Japanese PDFs into cleaner horizontal text before reading, especially when the source page is dense or column-based.
Reading novels with support tools
Helps novel readers add furigana, translate passages, and listen to Japanese text, which can reduce the friction of reading long-form material.
Processing manga content
Designed for manga pages where users may want to extract speech bubbles, edit copied dialogue, translate the entire page, or read bubble text aloud.
Studying Japanese on the web
Fits learners who read Japanese webpages and want browser-side furigana, translation, selection-based reading, and vocabulary highlighting while they browse.
Saving study materials
Useful when you want to export processed materials for later study, with the browser extension supporting image export and Pro adding Notion export.
Pros and Cons
Pros
- Supports a broad set of Japanese reading workflows in one place, including layout conversion, furigana, translation, and reading aloud.
- Covers several source formats, including PDF, EPUB, TXT, PNG, JPG, JPEG, and WEBP.
- Offers separate handling for general documents and more complex layouts like vertical text and mixed columns.
- Includes manga-specific functions such as dialogue extraction, copy/edit support, translation, and bubble reading.
- The browser extension extends the workflow into webpages with furigana, translation and explanation, selection reading, and export options.
Cons
- Free usage is limited for file processing and translation, so heavier reading or batch workflows will need Pro.
- The site notes that the enhanced processing mode is slower, which suggests more complex layouts take longer to process.
- Some FAQ items are present on the site, but not all operational details are spelled out publicly, such as every edge-case limitation or turnaround time.
FAQ
What file formats and size limits does Mooon support?
Mooon supports PDF, EPUB, TXT, PNG, JPG, JPEG, and WEBP files. The site states a single file can be up to 100 MB, and the FAQ says a single processing job can handle up to 200 pages.
What is the difference between general mode and enhanced mode?
The site presents two file-processing modes: a faster general mode for most documents and a slower enhanced mode for complex layouts such as vertical text. It also notes that mode choice affects processing speed and recognition accuracy, not billing or usage counting.
Can I export the processed content?
The pricing page says processed files can be exported, and Pro includes export options for PDF and EPUB. The browser extension also supports exporting study materials as images, with Pro adding export to Notion.
Is there a free plan and a paid plan?
The pricing page shows a Free plan and a Pro plan. Free includes limited file processing and limited daily translation/annotation usage, while Pro unlocks higher or unlimited usage for the listed workflows.
How is Mooon related to the browser extension?
The site includes both the main Mooon web app and a Mooon browser extension. The browser extension is for webpage reading workflows such as furigana, translation, and selection-based reading.
Quick Facts
- Category
- Japanese document processing
- Platform
- Web app plus browser extension
- Primary inputs
- PDF, EPUB, TXT, PNG, JPG, JPEG, WEBP
- Core workflows
- Layout conversion, furigana, translation, reading aloud
- Pricing
- Free and Pro plans
- Source domain
- mooon.xyz
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